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Top Architecture Tech Stack
Top Architecture Tech Stack
Nov 22, 2023 · Operations

Designing Multi‑Active (Active‑Active) Architecture Across Regions: Scenarios, Patterns, and Practical Techniques

This article explains the motivations, application scenarios, architectural patterns, and step‑by‑step design techniques for building geographically distributed active‑active systems that can survive extreme failures while balancing cost, complexity, and data consistency requirements.

Distributed SystemsHigh Availabilityactive-active
0 likes · 32 min read
Designing Multi‑Active (Active‑Active) Architecture Across Regions: Scenarios, Patterns, and Practical Techniques
Efficient Ops
Efficient Ops
Sep 29, 2022 · Operations

Mastering High Availability: From Cold Backups to Multi‑Active Disaster Recovery

This article explores the evolution of high‑availability strategies for stateful backend services, comparing cold backups, active/standby, same‑city and cross‑city active‑active setups, and discusses the trade‑offs, design considerations, and real‑world implementations of multi‑active and multi‑active architectures.

High Availabilityactive standbyactive-active
0 likes · 16 min read
Mastering High Availability: From Cold Backups to Multi‑Active Disaster Recovery
HelloTech
HelloTech
Apr 29, 2022 · Operations

Multi-Active Deployment Modes, Routing Rules, and Unitization in Data Center Architecture

The article explains multi‑active deployment modes—same‑city, cross‑city, and cross‑city multi‑active—along with routing rules (random, user‑ID, region) and unitization, describing how sharding IDs map traffic to central or unit data centers, and detailing middleware solutions for storage, messaging, SOA, and Snowflake ID generation to achieve scalable, highly available architecture.

High AvailabilityRoutingactive-active
0 likes · 10 min read
Multi-Active Deployment Modes, Routing Rules, and Unitization in Data Center Architecture
Architect
Architect
Dec 31, 2021 · Operations

Understanding Distributed System High Availability: From Single‑Node to Multi‑Active Architecture

This article explains the principles, evolution, and implementation details of high‑availability architectures—from basic single‑node setups to multi‑active, cross‑region deployments—covering redundancy, disaster recovery, data synchronization, routing strategies, and the challenges of achieving true geo‑distributed active‑active systems.

Distributed SystemsHigh AvailabilitySystem Architecture
0 likes · 30 min read
Understanding Distributed System High Availability: From Single‑Node to Multi‑Active Architecture
High Availability Architecture
High Availability Architecture
Nov 5, 2021 · Cloud Native

Multi-Cloud Active‑Active Architecture: Design, Benefits, and Challenges

The article examines why multi‑cloud active‑active (multi‑active) deployments are essential for high availability, outlines common disaster‑recovery patterns such as primary‑backup and active‑active, details the technical workflow of traffic routing, business and storage layers, and discusses the practical advantages and drawbacks of this approach.

Cloud NativeHigh AvailabilityMulti-Cloud
0 likes · 10 min read
Multi-Cloud Active‑Active Architecture: Design, Benefits, and Challenges
Full-Stack Internet Architecture
Full-Stack Internet Architecture
Oct 20, 2021 · Operations

Understanding Geo-Distributed Active-Active Architecture: Principles, Risks, and Implementation Strategies

This article explains the concept of geo-distributed active‑active (multi‑active) systems, covering architectural principles, availability metrics, redundancy techniques such as master‑slave replication, cold and hot disaster recovery, same‑city and cross‑city active‑active setups, data synchronization challenges, and practical routing and sharding methods to achieve high availability and scalability.

Distributed SystemsHigh AvailabilitySystem Architecture
0 likes · 29 min read
Understanding Geo-Distributed Active-Active Architecture: Principles, Risks, and Implementation Strategies
Architects' Tech Alliance
Architects' Tech Alliance
Aug 15, 2021 · Operations

Enterprise Multi‑Data Center Evolution: From Two‑Region Three‑Center to Distributed Active/Active Architecture

The article explains how enterprises are moving from traditional primary‑backup and two‑region three‑center data‑center models toward distributed active/active data‑center architectures to achieve continuous 24/7 operations, higher resource utilization, and fault‑transparent services, while outlining the technical and organizational challenges involved.

High AvailabilityIT Operationsactive-active
0 likes · 10 min read
Enterprise Multi‑Data Center Evolution: From Two‑Region Three‑Center to Distributed Active/Active Architecture
Dada Group Technology
Dada Group Technology
Sep 9, 2020 · Cloud Computing

Dada Dual-Cloud Active-Active Disaster Recovery: Architecture, Practices, and Lessons Learned

This article details Dada's dual‑cloud active‑active disaster‑recovery implementation, explaining high availability versus disaster recovery, describing the first‑phase architecture and challenges, and outlining the second‑phase enhancements such as multi‑data‑center Consul, bidirectional database replication, precise load‑balancing, tool adaptations, capacity elasticity, and future plans.

ConsulDatabase Replicationactive-active
0 likes · 13 min read
Dada Dual-Cloud Active-Active Disaster Recovery: Architecture, Practices, and Lessons Learned
Efficient Ops
Efficient Ops
Mar 17, 2019 · Operations

Why Cold-Standby Disaster Recovery Fails and How Active‑Active Architecture Wins

Modern cloud outages reveal that cold‑standby or simple multi‑cloud promises often provide only psychological comfort; achieving true high availability requires active‑active designs with local traffic handling, data partitioning, and low‑latency synchronization, while balancing cost, complexity, and physical distance constraints.

High AvailabilityMulti-Cloudactive-active
0 likes · 10 min read
Why Cold-Standby Disaster Recovery Fails and How Active‑Active Architecture Wins
Efficient Ops
Efficient Ops
Jun 10, 2018 · Databases

How MongoDB Enables Active‑Active Multi‑Data‑Center Architectures

This article examines the requirements of active‑active applications across multiple data centers, compares distributed database architectures—including two‑phase commit, multi‑master, and sharded designs—and explains how MongoDB’s sharding and write/read concerns enable high availability, consistency, and rapid failover in such environments.

Distributed DatabasesMongoDBSharding
0 likes · 16 min read
How MongoDB Enables Active‑Active Multi‑Data‑Center Architectures
Efficient Ops
Efficient Ops
Apr 1, 2018 · Backend Development

Ele.me’s Secret to Seamless Multi-Region Active-Active Architecture

This article details how Ele.me engineered a cross‑region active‑active system that scales elastically, tolerates whole‑data‑center failures, and maintains real‑time food‑delivery performance through geographic sharding, intelligent routing, and robust data‑replication middleware.

Distributed SystemsHigh Availabilityactive-active
0 likes · 18 min read
Ele.me’s Secret to Seamless Multi-Region Active-Active Architecture
Architects' Tech Alliance
Architects' Tech Alliance
Sep 17, 2017 · Operations

Understanding IBM PowerHA HyperSwap and SVC HyperSwap Active‑Active Storage Solutions

The article explains how IBM PowerHA SystemMirror 7.1 and Spectrum Virtualize/SVC HyperSwap enable active‑active, cross‑site storage architectures using Metro Mirror, detailing their history, topology, failover mechanisms, performance characteristics, volume‑group features, and operational advantages for high‑availability environments.

High AvailabilityHyperSwapIBM
0 likes · 13 min read
Understanding IBM PowerHA HyperSwap and SVC HyperSwap Active‑Active Storage Solutions
Ctrip Technology
Ctrip Technology
Dec 9, 2016 · Operations

Design and Implementation of Ctrip Call Center's Active‑Active Architecture and Unified Login

The article details Ctrip's call‑center architecture evolution, describing the multi‑layer active‑active design, public access, application and client layers, unified login mechanisms, operational challenges, disaster‑recovery drills, and future plans for software‑only and mobile agents, illustrating practical SRE principles in a large‑scale telephony system.

High AvailabilityIP phoneSRE
0 likes · 22 min read
Design and Implementation of Ctrip Call Center's Active‑Active Architecture and Unified Login
Ctrip Technology
Ctrip Technology
Jun 16, 2016 · Operations

Technical Overview of Multi‑Site Active‑Active Call Center Architecture and Implementation

The article explains how modern call centers evolve to multi‑site active‑active deployments, detailing the network design, disaster‑recovery mechanisms, login and monitoring logic, key features supporting automatic failover for thousands of agents, and future expansion possibilities.

High Availabilityactive-activecall center
0 likes · 6 min read
Technical Overview of Multi‑Site Active‑Active Call Center Architecture and Implementation
Architecture Digest
Architecture Digest
Jun 15, 2016 · Operations

Design and Implementation of Multi‑Site Active‑Active Disaster Recovery for Call Centers

The article describes how a large‑scale call center evolves to a multi‑site architecture and implements system‑level active‑active disaster recovery using Ctrip's contact‑center and unified login platforms, detailing the login flow, fault‑detection logic, key features, and future extensions.

High AvailabilitySystem Architectureactive-active
0 likes · 6 min read
Design and Implementation of Multi‑Site Active‑Active Disaster Recovery for Call Centers
Architects' Tech Alliance
Architects' Tech Alliance
Apr 24, 2016 · Operations

Comprehensive Overview of Data Center Active‑Active (Dual‑Active) Solutions

This article provides an in‑depth technical overview of data‑center active‑active architectures, covering network interconnects, storage SAN/Fibre Channel links, application clustering, arbitration mechanisms, gateway‑based designs, technical requirements, and practical limitations for achieving end‑to‑end high availability.

High AvailabilityStorageactive-active
0 likes · 14 min read
Comprehensive Overview of Data Center Active‑Active (Dual‑Active) Solutions
Alibaba Cloud Infrastructure
Alibaba Cloud Infrastructure
May 27, 2015 · Databases

Design and Application of Alibaba's Data Replication Center (DRC) for Active‑Active Scenarios

The article presents an overview of Alibaba's Data Replication Center (DRC), detailing its architecture, real‑time cross‑region synchronization capabilities, consistency and latency guarantees, deployment strategies, and its use cases on Alibaba Cloud such as RDS migration and multi‑active e‑commerce workloads.

Alibaba CloudDRCactive-active
0 likes · 10 min read
Design and Application of Alibaba's Data Replication Center (DRC) for Active‑Active Scenarios